nexmon – Blame information for rev 1

Subversion Repositories:
Rev:
Rev Author Line No. Line
1 office 1 /*
2 * Copyright © 2011 Ryan Lortie
3 *
4 * This library is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * licence, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
16 *
17 * Author: Ryan Lortie <desrt@desrt.ca>
18 */
19  
20 #ifndef __G_ATOMIC_H__
21 #define __G_ATOMIC_H__
22  
23 #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
24 #error "Only <glib.h> can be included directly."
25 #endif
26  
27 #include <glib/gtypes.h>
28  
29 G_BEGIN_DECLS
30  
31 GLIB_AVAILABLE_IN_ALL
32 gint g_atomic_int_get (const volatile gint *atomic);
33 GLIB_AVAILABLE_IN_ALL
34 void g_atomic_int_set (volatile gint *atomic,
35 gint newval);
36 GLIB_AVAILABLE_IN_ALL
37 void g_atomic_int_inc (volatile gint *atomic);
38 GLIB_AVAILABLE_IN_ALL
39 gboolean g_atomic_int_dec_and_test (volatile gint *atomic);
40 GLIB_AVAILABLE_IN_ALL
41 gboolean g_atomic_int_compare_and_exchange (volatile gint *atomic,
42 gint oldval,
43 gint newval);
44 GLIB_AVAILABLE_IN_ALL
45 gint g_atomic_int_add (volatile gint *atomic,
46 gint val);
47 GLIB_AVAILABLE_IN_2_30
48 guint g_atomic_int_and (volatile guint *atomic,
49 guint val);
50 GLIB_AVAILABLE_IN_2_30
51 guint g_atomic_int_or (volatile guint *atomic,
52 guint val);
53 GLIB_AVAILABLE_IN_ALL
54 guint g_atomic_int_xor (volatile guint *atomic,
55 guint val);
56  
57 GLIB_AVAILABLE_IN_ALL
58 gpointer g_atomic_pointer_get (const volatile void *atomic);
59 GLIB_AVAILABLE_IN_ALL
60 void g_atomic_pointer_set (volatile void *atomic,
61 gpointer newval);
62 GLIB_AVAILABLE_IN_ALL
63 gboolean g_atomic_pointer_compare_and_exchange (volatile void *atomic,
64 gpointer oldval,
65 gpointer newval);
66 GLIB_AVAILABLE_IN_ALL
67 gssize g_atomic_pointer_add (volatile void *atomic,
68 gssize val);
69 GLIB_AVAILABLE_IN_2_30
70 gsize g_atomic_pointer_and (volatile void *atomic,
71 gsize val);
72 GLIB_AVAILABLE_IN_2_30
73 gsize g_atomic_pointer_or (volatile void *atomic,
74 gsize val);
75 GLIB_AVAILABLE_IN_ALL
76 gsize g_atomic_pointer_xor (volatile void *atomic,
77 gsize val);
78  
79 GLIB_DEPRECATED_IN_2_30_FOR(g_atomic_int_add)
80 gint g_atomic_int_exchange_and_add (volatile gint *atomic,
81 gint val);
82  
83 G_END_DECLS
84  
85 #if defined(G_ATOMIC_LOCK_FREE) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)
86  
87 /* We prefer the new C11-style atomic extension of GCC if available */
88 #if defined(__ATOMIC_SEQ_CST) && !defined(__clang__)
89  
90 #define g_atomic_int_get(atomic) \
91 (G_GNUC_EXTENSION ({ \
92 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
93 (void) (0 ? *(atomic) ^ *(atomic) : 0); \
94 (gint) __atomic_load_4 ((atomic), __ATOMIC_SEQ_CST); \
95 }))
96 #define g_atomic_int_set(atomic, newval) \
97 (G_GNUC_EXTENSION ({ \
98 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
99 (void) (0 ? *(atomic) ^ (newval) : 0); \
100 __atomic_store_4 ((atomic), (newval), __ATOMIC_SEQ_CST); \
101 }))
102  
103 #if GLIB_SIZEOF_VOID_P == 8
104  
105 #define g_atomic_pointer_get(atomic) \
106 (G_GNUC_EXTENSION ({ \
107 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
108 (gpointer) __atomic_load_8 ((atomic), __ATOMIC_SEQ_CST); \
109 }))
110 #define g_atomic_pointer_set(atomic, newval) \
111 (G_GNUC_EXTENSION ({ \
112 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
113 (void) (0 ? (gpointer) *(atomic) : 0); \
114 __atomic_store_8 ((atomic), (gsize) (newval), __ATOMIC_SEQ_CST); \
115 }))
116  
117 #else /* GLIB_SIZEOF_VOID_P == 8 */
118  
119 #define g_atomic_pointer_get(atomic) \
120 (G_GNUC_EXTENSION ({ \
121 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
122 (gpointer) __atomic_load_4 ((atomic), __ATOMIC_SEQ_CST); \
123 }))
124 #define g_atomic_pointer_set(atomic, newval) \
125 (G_GNUC_EXTENSION ({ \
126 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
127 (void) (0 ? (gpointer) *(atomic) : 0); \
128 __atomic_store_4 ((atomic), (gsize) (newval), __ATOMIC_SEQ_CST); \
129 }))
130  
131 #endif /* GLIB_SIZEOF_VOID_P == 8 */
132  
133 #else /* defined(__ATOMIC_SEQ_CST) */
134  
135 #define g_atomic_int_get(atomic) \
136 (G_GNUC_EXTENSION ({ \
137 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
138 (void) (0 ? *(atomic) ^ *(atomic) : 0); \
139 __sync_synchronize (); \
140 (gint) *(atomic); \
141 }))
142 #define g_atomic_int_set(atomic, newval) \
143 (G_GNUC_EXTENSION ({ \
144 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
145 (void) (0 ? *(atomic) ^ (newval) : 0); \
146 *(atomic) = (newval); \
147 __sync_synchronize (); \
148 }))
149 #define g_atomic_pointer_get(atomic) \
150 (G_GNUC_EXTENSION ({ \
151 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
152 __sync_synchronize (); \
153 (gpointer) *(atomic); \
154 }))
155 #define g_atomic_pointer_set(atomic, newval) \
156 (G_GNUC_EXTENSION ({ \
157 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
158 (void) (0 ? (gpointer) *(atomic) : 0); \
159 *(atomic) = (__typeof__ (*(atomic))) (gsize) (newval); \
160 __sync_synchronize (); \
161 }))
162  
163 #endif /* !defined(__ATOMIC_SEQ_CST) */
164  
165 #define g_atomic_int_inc(atomic) \
166 (G_GNUC_EXTENSION ({ \
167 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
168 (void) (0 ? *(atomic) ^ *(atomic) : 0); \
169 (void) __sync_fetch_and_add ((atomic), 1); \
170 }))
171 #define g_atomic_int_dec_and_test(atomic) \
172 (G_GNUC_EXTENSION ({ \
173 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
174 (void) (0 ? *(atomic) ^ *(atomic) : 0); \
175 __sync_fetch_and_sub ((atomic), 1) == 1; \
176 }))
177 #define g_atomic_int_compare_and_exchange(atomic, oldval, newval) \
178 (G_GNUC_EXTENSION ({ \
179 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
180 (void) (0 ? *(atomic) ^ (newval) ^ (oldval) : 0); \
181 (gboolean) __sync_bool_compare_and_swap ((atomic), (oldval), (newval)); \
182 }))
183 #define g_atomic_int_add(atomic, val) \
184 (G_GNUC_EXTENSION ({ \
185 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
186 (void) (0 ? *(atomic) ^ (val) : 0); \
187 (gint) __sync_fetch_and_add ((atomic), (val)); \
188 }))
189 #define g_atomic_int_and(atomic, val) \
190 (G_GNUC_EXTENSION ({ \
191 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
192 (void) (0 ? *(atomic) ^ (val) : 0); \
193 (guint) __sync_fetch_and_and ((atomic), (val)); \
194 }))
195 #define g_atomic_int_or(atomic, val) \
196 (G_GNUC_EXTENSION ({ \
197 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
198 (void) (0 ? *(atomic) ^ (val) : 0); \
199 (guint) __sync_fetch_and_or ((atomic), (val)); \
200 }))
201 #define g_atomic_int_xor(atomic, val) \
202 (G_GNUC_EXTENSION ({ \
203 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
204 (void) (0 ? *(atomic) ^ (val) : 0); \
205 (guint) __sync_fetch_and_xor ((atomic), (val)); \
206 }))
207  
208 #define g_atomic_pointer_compare_and_exchange(atomic, oldval, newval) \
209 (G_GNUC_EXTENSION ({ \
210 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
211 (void) (0 ? (gpointer) *(atomic) : 0); \
212 (gboolean) __sync_bool_compare_and_swap ((atomic), (oldval), (newval)); \
213 }))
214 #define g_atomic_pointer_add(atomic, val) \
215 (G_GNUC_EXTENSION ({ \
216 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
217 (void) (0 ? (gpointer) *(atomic) : 0); \
218 (void) (0 ? (val) ^ (val) : 0); \
219 (gssize) __sync_fetch_and_add ((atomic), (val)); \
220 }))
221 #define g_atomic_pointer_and(atomic, val) \
222 (G_GNUC_EXTENSION ({ \
223 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
224 (void) (0 ? (gpointer) *(atomic) : 0); \
225 (void) (0 ? (val) ^ (val) : 0); \
226 (gsize) __sync_fetch_and_and ((atomic), (val)); \
227 }))
228 #define g_atomic_pointer_or(atomic, val) \
229 (G_GNUC_EXTENSION ({ \
230 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
231 (void) (0 ? (gpointer) *(atomic) : 0); \
232 (void) (0 ? (val) ^ (val) : 0); \
233 (gsize) __sync_fetch_and_or ((atomic), (val)); \
234 }))
235 #define g_atomic_pointer_xor(atomic, val) \
236 (G_GNUC_EXTENSION ({ \
237 G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
238 (void) (0 ? (gpointer) *(atomic) : 0); \
239 (void) (0 ? (val) ^ (val) : 0); \
240 (gsize) __sync_fetch_and_xor ((atomic), (val)); \
241 }))
242  
243 #else /* defined(G_ATOMIC_LOCK_FREE) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) */
244  
245 #define g_atomic_int_get(atomic) \
246 (g_atomic_int_get ((gint *) (atomic)))
247 #define g_atomic_int_set(atomic, newval) \
248 (g_atomic_int_set ((gint *) (atomic), (gint) (newval)))
249 #define g_atomic_int_compare_and_exchange(atomic, oldval, newval) \
250 (g_atomic_int_compare_and_exchange ((gint *) (atomic), (oldval), (newval)))
251 #define g_atomic_int_add(atomic, val) \
252 (g_atomic_int_add ((gint *) (atomic), (val)))
253 #define g_atomic_int_and(atomic, val) \
254 (g_atomic_int_and ((guint *) (atomic), (val)))
255 #define g_atomic_int_or(atomic, val) \
256 (g_atomic_int_or ((guint *) (atomic), (val)))
257 #define g_atomic_int_xor(atomic, val) \
258 (g_atomic_int_xor ((guint *) (atomic), (val)))
259 #define g_atomic_int_inc(atomic) \
260 (g_atomic_int_inc ((gint *) (atomic)))
261 #define g_atomic_int_dec_and_test(atomic) \
262 (g_atomic_int_dec_and_test ((gint *) (atomic)))
263  
264 #define g_atomic_pointer_get(atomic) \
265 (g_atomic_pointer_get (atomic))
266 #define g_atomic_pointer_set(atomic, newval) \
267 (g_atomic_pointer_set ((atomic), (gpointer) (newval)))
268 #define g_atomic_pointer_compare_and_exchange(atomic, oldval, newval) \
269 (g_atomic_pointer_compare_and_exchange ((atomic), (gpointer) (oldval), (gpointer) (newval)))
270 #define g_atomic_pointer_add(atomic, val) \
271 (g_atomic_pointer_add ((atomic), (gssize) (val)))
272 #define g_atomic_pointer_and(atomic, val) \
273 (g_atomic_pointer_and ((atomic), (gsize) (val)))
274 #define g_atomic_pointer_or(atomic, val) \
275 (g_atomic_pointer_or ((atomic), (gsize) (val)))
276 #define g_atomic_pointer_xor(atomic, val) \
277 (g_atomic_pointer_xor ((atomic), (gsize) (val)))
278  
279 #endif /* defined(__GNUC__) && defined(G_ATOMIC_OP_USE_GCC_BUILTINS) */
280  
281 #endif /* __G_ATOMIC_H__ */